Recent forecasts from the Korea Meteorological Administration and international models indicate a daily minimum of 19–20°C in Seoul and Incheon on September 18, driven by persistent easterly flow, increasing cloud cover overnight, and the absence of a strong cold front. These conditions produce a moderated diurnal range typical of mid-September transitional weather, with historical September lows averaging near 17–18°C but current patterns running several degrees warmer. Model consensus supports the 19–20°C band as the most probable outcome, while deviations would require unexpected radiative cooling under clearer skies or a sharper northerly shift. Updated model runs and official briefings through the evening of the 17th remain the key near-term catalysts for any probability shifts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Seoul (Incheon) on September 18?
Lowest temperature in Seoul (Incheon) on September 18?
20°C 44%
19°C 32%
21°C 18%
18°C 10%
NEW
NEW
Sep 18, 2026
15°C or below
1%
16°C
2%
17°C
6%
18°C
10%
19°C
32%
20°C
44%
21°C
18%
22°C
2%
23°C
2%
24°C
1%
25°C or higher
2%
20°C 44%
19°C 32%
21°C 18%
18°C 10%
NEW
NEW
Sep 18, 2026
15°C or below
$101 Vol.
1%
16°C
$251 Vol.
2%
17°C
$106 Vol.
6%
18°C
$73 Vol.
10%
19°C
$815 Vol.
32%
20°C
$957 Vol.
44%
21°C
$397 Vol.
18%
22°C
$0 Vol.
2%
23°C
$0 Vol.
2%
24°C
$65 Vol.
1%
25°C or higher
$53 Vol.
2%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent forecasts from the Korea Meteorological Administration and international models indicate a daily minimum of 19–20°C in Seoul and Incheon on September 18, driven by persistent easterly flow, increasing cloud cover overnight, and the absence of a strong cold front. These conditions produce a moderated diurnal range typical of mid-September transitional weather, with historical September lows averaging near 17–18°C but current patterns running several degrees warmer. Model consensus supports the 19–20°C band as the most probable outcome, while deviations would require unexpected radiative cooling under clearer skies or a sharper northerly shift. Updated model runs and official briefings through the evening of the 17th remain the key near-term catalysts for any probability shifts.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 16, 2026, 12:29 AM ET
Volume
$2,819End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent forecasts from the Korea Meteorological Administration and international models indicate a daily minimum of 19–20°C in Seoul and Incheon on September 18, driven by persistent easterly flow, increasing cloud cover overnight, and the absence of a strong cold front. These conditions produce a moderated diurnal range typical of mid-September transitional weather, with historical September lows averaging near 17–18°C but current patterns running several degrees warmer. Model consensus supports the 19–20°C band as the most probable outcome, while deviations would require unexpected radiative cooling under clearer skies or a sharper northerly shift. Updated model runs and official briefings through the evening of the 17th remain the key near-term catalysts for any probability shifts.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 Sep '26.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rksi
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$2,819End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Recent forecasts from the Korea Meteorological Administration and international models indicate a daily minimum of 19–20°C in Seoul and Incheon on September 18, driven by persistent easterly flow, increasing cloud cover overnight, and the absence of a strong cold front. These conditions produce a moderated diurnal range typical of mid-September transitional weather, with historical September lows averaging near 17–18°C but current patterns running several degrees warmer. Model consensus supports the 19–20°C band as the most probable outcome, while deviations would require unexpected radiative cooling under clearer skies or a sharper northerly shift. Updated model runs and official briefings through the evening of the 17th remain the key near-term catalysts for any probability shifts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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